I've seen 3 fixes proposed for this:
- validate game install looking for corrupt files (had 2 corrupt files, redownloading)
- run with setting "-lv", reduces gore.
- run Steam as Administrator
This seems linked to when special infected appear.
Will try patching, then trying the 3rd option, then the 2nd, then will try the 9.12 drivers.
Update: Verified the files 3 times now. First time, 2 corrupt files. Second time, 2 corrupt files, 3rd time, 1 corrupt file. All redownloaded each time, but game still crashed. Will continue verifying until they come back as all verified - if I get fed up with that, will redownload all the content! But this looks like the chief culprit.
Edit again: reinstalling local content... be there in 2h+
![Stick Out Tongue :p :p](/styles/default/xenforo/vbSmilies/Normal/tongue.gif)